What is this? Mining Shaft Find.

[sneak91198]

I found this near a mine shaft with my metal detector. I think it might be some sort of button or old bar token.

 

Amazon Forum Fav 👍

Agony and Death on a Gold Rush Steamer: The Disastrous Sinking of the Side-Wheeler Yankee Blade - Grab it through Amazon!

[taz42o]

Is it steel ? It looks like a knockout for an electric box.

 

[sneak91198]

I believe it is steel.

 

[BosnMate]

Is it steel ? It looks like a knockout for an electric box.View attachment 738082

I believe Taz solved it.